[Chat (Android)] survival talent suggetion

hi guys just got survival
i have
wala lv 7 bullwork
rockno lv7 tanacity
gs not good talent
athen not good talennt and currently working on her for dungen

other hero are espirita manchesta asura hertbreaker idle in wherehouse

i am f2p and spended fame on wala and rockno talent. if it is worth to replace it then only suggest that hero or else suggest from thebother hero which i have.
i am thinking to go with athen as i need her in place of gs in dungen. i have baloon event talent chest lv5 which was save for athen. before that i got this survival talent. pls suggest me the best.

In my opinion Survival is good on Ronin, Mike, Dove Keeper, but also heroes with lot's oh HP, since they must survive in order to heal themselves. Athene is not good idea, Walla also. Rockno could be option but he is better with SS/SL. GS also need def talent like SS/SL imo.
From those heroes you have listed i think Rockno can be good pick for it, but certainly not best.
But show us rest of your heroes, maybe you will have better option there.